Pros
Five weeks paid vacation, decent medical benefits (you'll need those to deal with the stress), free lunch (which you will eat at your desk while you work), free transit plan.
Cons
You can work like a dog for very little money. If you're a hard worker, you may be given (with no salary increase) major responsibilities of your colleagues who don't handle the duties that they get paid to perform. Working every day during holiday weekends performing tasks that have little to do with your job is commonplace. There were a lot of talented people working at OSF, but I don't see how anyone could work there for very long. I witnessed 50% turnover in my unit in a short time. Managers act like bullies and will do and say things that you'd think wouldn't be allowed. Human Resources is there to protect the organization and has no power. Dealing with the toxic management wasn't worth it, but maybe other parts of the organization are different. It's a shame, it could be a nice place to work if it weren't an abusive environment.